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修正探测中心 V3 拼图经纬度:按半开网格取样,不再用 linspace 闭区间。 - #152

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IncubatorShokuhou:cursor/v3-mosaic-upstream-0cdf
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IncubatorShokuhou wants to merge 1 commit into
CyanideCN:masterfrom
IncubatorShokuhou:cursor/v3-mosaic-upstream-0cdf

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当前探测中心v3拼图使用

self.lon = np.linspace(edge_w, edge_e, nx)
self.lat = np.linspace(edge_s, edge_n, ny)

来确定读取后的经纬度范围;这造成了lat\lon的分辨率不是整的0.01度。
首先确定2个问题
(1)格点数是 4200×6200,不是 4201×6201
这个从二进制头文件、专利CN117972009B等都可以证明。不赘述了
(2)以西南边界( 12.2°N、73.0°E)开头,分辨率0.01度;而不是12.21°N、73.01°E
这个找不到直接证据。但是SWAN的起点就是 Start,不是 Start+Δ。所以按常理来说这里应该就是

lon = 73.0  + arange(6200) × 0.01     →  73.00, 73.01, …, 134.99
lat = 12.2  + arange(4200) × 0.01     →  12.20, 12.21, …, 54.19

这样的才对

Co-authored-by: Hao Lyu <IncubatorShokuhou@users.noreply.github.com>
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